Mower



ZSheets-Sheet 1.. J. W. GUNNELS-& D. O. SHIVES.

' Mower. No. 228,890. Patented June 15,1880.

N. PETERS. FHOTO-LITHOGRAPNER, WASHINGION. n C,

2 Sheets-Sheet 2, J. W. GUNNELS. & D. O. SHIVES.

Mower. No. 228,890. Patented June 15,1880.

UNITED STATES JOHN W. GUNNELS AND DAYTON O.

PATENT OFFICE.

SHIVES, OF HANCOCK, MARYLAND.

MOWER.

-SPECIFICATION forming part of Letters Patent No. 228,890, dated June 15, 1880,

Application filed February 4, 1880.

To all whom it may concern Be it known that we, JOHN W. GUNNELs and DAYTON O. SHIVES, of Hancock, in the county of \Vashington and State of Maryland, have invented certain Improvements in Mow ing-Machines, of which thefollowingis a specification.

This invention relates to improvements in mowing and reaping machines, whereby the frame carrying the drag-bar and the cutterbar or knife-bar may be elevated or lowered at pleasure, and also the knife-bar elevated at such an angle that the machine may be run nearer to a standing tree, stump, or other obstacle too high for the frame to pass over, all of which will be hereinafter more fully described, and set forth in the claim.

Figure l is a plan view of the whole machine, having a part of the seat-platform broken away to show the clutch devices below. Fig. 2 is an end elevation, showing the knife-bar elevated to pass an obstacle. Fig. 3 is also an end elevation, showing the drag-bar elevated to pass over an irregularity in the surface of the ground.

The frame A is of the ordinary construction and mounted on two wheels, B B, on the axle O of which .wheels is a beveled-cog drivingwheel,(not shown in the drawings,) and which wheel, when not in action, turns loosely on the axle; but by means of the clutch 0 (shown in Fig. 1) the driving-wheel turns with the axle, and by meshing with a pinion on a transverse shaft, D, the end of which is seen in Figs. 2 and 3, the cam-wheelD'is carried around with the shaft D, which cam-wheel D has within its face six recurvatures, d d, 850., so that the wrist-pin a of the cranklever b, in traveling in the recurved grooves d 61, will have an upand-down motion twelve times to every revolution of the wheel D. In Fig. 2 the wristpin a is down, and in Fig. 3 it is up. Consequently the crank-lever b and its" connectingrod 0, which is pivoted to I) at 0, will reciprocate back andforward twelve times, also carryin g the knife-bar and blades (1 d d, which are attached to the knife-bar in the usual manner.

The crank-lever b is pivoted at b to a standard, a, on the main frame A of the machine. The finger-bar e and knives d d d are of the usual construction, and require no description.

A is the drag-bar, and on it is the shoe E, theend of which is seen in Figs. 2 and 3. The shoe E turns freely on the drag-bar A, and to the shoe is firmly attached the knife-bar and knives, so that when the shoe is turned on the drag-bar A the knife-bar and knives are elevated also. At 6 the shoe E has a segmentrack, the teeth of which mesh with the teeth of a rack-lever, f, which-is pivoted to the bar A atf. This leverf has a shoulder, f, the purpose of which is to bear against and act as an abutment for the shoe E, as seen in Fig. 3 at f, when the bar A is elevated, and with it the finger-bar e, as shown in Fig. 3, to pass over the rock 2 and raise the knives. BarA is shown in solid lines in Fig. 1 and in dotted lines in Figs. 2 and 3.

On the end of lever f is fastened a chain, g, (shownin Fig. 2,) which passes over a pulley, h, on the end of a rock-shaft, h. At the other end of rock-shaft h is a ratchet-wheel, h, having a lever-arm, i, and a spring-pawl, i. In Fig. 2 the lever-arm t is carried to the left hand, whereby the rock-shaft h and pulley h are rotated, and the chain 9 elevates the arm of lever f, the teeth of which cause the shoe E to rotate in the opposite direction, and thereby elevate the kuife-bar and knives, as seen in the figure, to pass an elevated obstacle, thus saving the distance between the numbers 1 and 2 each side of that obstacle.

The rock-shaft h and pulley it have another function, which is to elevate the drag-bar A, and with it the knifebar and knives, as follows: A chain, g, is wound around pulley h on the opposite side to the chain g, as seen in Fig. 3. The lower end of chain g is attached to the bar A, and whenever any obstacle on the ground, such as a rock or low stump, has to be passed over, the operator, who sits onthe platform F, (no seat being represented in the figures,) turns the lever-arm i to the right, as seen in Fig. 3, whereby the chain g is wound over pulley h, and the bar A is thereby lifted, and with it the shoe E and finger-bar 6. Shoe E is sustained against the shoulder of lever f at f, as before explained, and this elevation of all these parts is only limited by the extent to which the lever 41 can be turned to the right always enough for the knives to pass over anyordinaryrock or low stump. Should either range higher, then the first operation must be resorted to.

At Gr, Fig. l, is seen alever by which the clutch O is to be operated. The lever is bent 5 as seen in broken l nes, and is connected to the clutch and when turned down, as shown,

the clutch is engaged with the wheel at C but to uncouple the operator pulls the lever G into the vertical position shown in the dot 1o ted circle at G. The lever passes along the edge of an inclined cam-surface, 7c, and consequently the lever is moved laterally, and carries with it the clutch O, which is pulled out of gear from 0 to the dotted lines in Fig. l. 15 The spring 70 is then recoiled, and when the 

